Modular hip joint implant

a hip joint and module technology, applied in the field of modular hip joint implants, can solve the problems of still being bulky or cumbersome to obtain modular components, and achieve the effect of improving the stability and stability of the hip join

Active Publication Date: 2011-11-29
BIOMET MFG CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0002]Modular prosthetic devices can be used in total or revision hip procedures. Modularity has the advantage of added flexibility and choice, enabling the practicing surgeon to select appropriately sized interconnected components for specific conditions and patients. Nevertheless, some of the available modular components can still be bulky or cumbersome for implantation with current minimally invasive procedures, which require small-sized incisions.
[0005]The present teachings also provide a modular hip joint implant that includes a femoral stem and a neck component. The femoral stem has a proximal surface that defines a dovetail groove with first and second female wings. The neck component has a distal surface that defines a semi-dovetail projection having a single male wing. The semi-dovetail projection slidably interlocks with the dovetail groove such that a keyway is defined between the second female wing and the neck component. The implant can include a key wedgeable in the keyway to lock the femoral stem and the neck component against relative sliding.

Problems solved by technology

Nevertheless, some of the available modular components can still be bulky or cumbersome for implantation with current minimally invasive procedures, which require small-sized incisions.

Method used

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Embodiment Construction

[0031]The following description of various embodiments is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses. For example, although the invention is illustrated for a hip implant, the invention can be used with any type of prosthesis for a bone such as, for example, a proximal or distal femur, a proximal or distal tibia, a pro

[0032]FIGS. 1, 13 and 14 illustrate respectively an exemplary of a modular hip joint implant 100 and an exemplary modular hip replacement system 300. The implant 100 includes a femoral stem 110, a neck component 150, and a key 180. The femoral stem 110 and the neck component 150 have opposing interlocking proximal stem and distal neck surfaces 112, 152, which allow for relative sliding therebetween, as best seen in FIGS. 8 and 9. When interlocked, the femoral stem 110 and neck component 150 define a keyway 170. The key 180 can be wedged into the keyway 170 to lock the components of the modular hip joint implant...

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Abstract

A modular hip joint implant and associated method. The modular hip implant includes a femoral stem having a proximal surface defining a dovetail groove having first and second female wings, and a neck component having a distal surface defining a semi-dovetail projection engaging the dovetail groove. The projection includes a single male wing mating with the first femoral wing.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is a divisional application of U.S. patent application Ser. No. 10 / 862,150, filed on Jun. 4, 2004. The entire disclosure of the above application is incorporated herein by reference in its entirety.INTRODUCTION[0002]Modular prosthetic devices can be used in total or revision hip procedures. Modularity has the advantage of added flexibility and choice, enabling the practicing surgeon to select appropriately sized interconnected components for specific conditions and patients. Nevertheless, some of the available modular components can still be bulky or cumbersome for implantation with current minimally invasive procedures, which require small-sized incisions.[0003]Accordingly, improved modular hip joint implants are still desirable.SUMMARY[0004]The present teachings provide in various embodiments a modular hip joint implant. The modular hip implant can include a femoral stem having a proximal surface defining a dovetail gro...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): A61F2/32
CPCA61F2/30739A61F2/3609A61F2/4637A61F2002/30387A61F2002/30515A61F2002/30616A61F2002/3652A61F2002/3674A61F2220/0025
Inventor GIBBS, PHILLIP M.LACKEY, MONTY J.
Owner BIOMET MFG CORP
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